663141720 has 64 divisors (see below), whose sum is σ = 1994531040. Its totient is φ = 176384000.

The previous prime is 663141719. The next prime is 663141733. The reversal of 663141720 is 27141366.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41230 + ... + 55010.

Almost surely, 2^663141720 is an apocalyptic number.

663141720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

663141720 is an abundant number, since it is smaller than the sum of its proper divisors (1331389320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663141720 is a wasteful number, since it uses less digits than its factorization.

663141720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14196 (or 14192 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 663141720 is about 25751.5382064839. The cubic root of 663141720 is about 872.0380808497.

The spelling of 663141720 in words is "six hundred sixty-three million, one hundred forty-one thousand, seven hundred twenty".